Double Integrals Over Rectangles

Last updated Mar 6, 2022 Edit Source

• Math calculus

When the $\Delta A$ approaches zero while calculating the 3D Riemann Sum on Rectangles, it can be written as an integral. An integral for a function that calculates the area under a function $f(x,y)$ over a rectangle $D$ is written as:

$$ \iint_D f(x,y) dA $$